Bridges

Whiteman Park Viaduct is part of the new 21 km Morley-Ellenbrook Rail Line (MEL) from Bayswater to Ellenbrook, in the Perth Metropolitan area in Western Australia. The viaduct is required to elevate MEL at the Whiteman Park Station precinct to allow efficient road traffic and pedestrian flow around the station. The viaduct comprises a pair of half through u-trough prestressed and post tensioned continuous superstructures on pot bearings atop in situ piers. Each superstructure has an overall length of 292 m (10 spans) and is protected from rail impact loading at abutment ends by deflection walls. A slab track is provided within the troughs. An elevated 10 m wide station platform, constructed of a combination of hollow-core planks and steel beams is simply supported on the inner girders of the u-troughs. This paper presents salient design considerations and process for the viaduct, with particular emphasis on the continuous u-troughs. The paper discusses the challenges of integrating elevated platform on viaduct structures.